Are you eating any of these things? Kefir, yogurt with live cultures, sauerkraut that hasn't been heated in a can or jar, rejuvelac (easy to make). Taking them daily can help with many ailments.
Also, re constipation, some possible approaches:
If you eat 2 quarts of airpopped, hopefully organic, popcorn with minimal to no oil or butter (maybe some coconut oil) and a small Watermelon all in one day you should start getting cleaned out due to all that roughage for one thing.
Taking 2-3 capsules of magnesium before bedtime has helped many people. I personally think brand can make all the difference and have found Twinlab (cheaper at places like Vitacost & iherb) to be very good.
Drinking at least 8 glasses of water, or even herbal tea, seems to be essential. Your body needs fluid to move stuff along.
Some people really like Oxypowder but I have found that it seems to deplete my electrolytes or something because it made me feel very tired after a couple of days.
Blessed Herbs is, mho, the best bowel cleanser, but pricey.
You can do maybe 1 high enema a week w/o getting dependent on enemas, and low enemas (2-4 cups at a time) will cause no dependency so use as often as helpful. Be sure to eat acidoophilus yogurt to replenish good bacteria. Dannon sells this in the plain, usually non fat, no sugar etc. added version.
Some people use cascara sagara and it is effective, but you can get dependent on it. One way to counteract that dependency at least somewhat, if you find it's all that works, is to not take it every day. Chia seeds mixed in with soup or green drinks can be very helpful – though it may take a week or two for the effect to be seen.
It wouldn't hurt to put some quassia "tea" (you buy the chips & let them steep in hot water just like tea) and/or black walnut or black walnut/womrwood (again available at places like Vitacost) tincture into the last enema bag, and they can help kill any parasites.
Never underestimate the prevalence of mercury. Not just silver fillings but many, many things in the environment are a threat. For example plastic bottles leech out mercury into the food or drink, bubble wrap will cause it to get into hands that work with it, etc. etc. Activated charcoal put in enemas (you can mix them in with the last enema mentioned above along with the acidophilus yogurt & coffee, but not with meds or supplements 4 hours before or after oral ingestion) and/or taken orally can help remove mercury and other toxins. Some industrial pollutants only go out by sweat, though.